ATLANTIC CITY, NJ - JUNE 22: (L-R) Ross Pearson and Cub Swanson exchange punches in a featherweight bout during UFC on FX 4 at Revel Casino on June 22, 2012 in Atlantic City, New Jersey. (Photo by Nick Laham/Zuffa LLC/Zuffa LLC) less

ATLANTIC CITY, NJ - JUNE 22: (L-R) Ross Pearson and Cub Swanson exchange punches in a featherweight bout during UFC on FX 4 at Revel Casino on June 22, 2012 in Atlantic City, New Jersey. (Photo by Nick ... more

LONDON, ENGLAND - FEBRUARY 16: (R-L) Cub Swanson throws a spinning back fist against Dustin Poirier in their featherweight fight during the UFC on Fuel TV event on February 16, 2013 at Wembley Arena in London, England. less

LONDON, ENGLAND - FEBRUARY 16: (R-L) Cub Swanson throws a spinning back fist against Dustin Poirier in their featherweight fight during the UFC on Fuel TV event on February 16, 2013 at Wembley Arena in London, ... more